Jess is dressed to impress on her first day at the lab, even wearing a tie! After warming up her face (in a different clip), she sets out to see just how much pressure her powerful, fit core can produce. She is also evaluating mouthpieces, although her blowing pressure increases with each attempt. How high does she go? How many other women have ever gotten to 4psi?

Jess is dressed to impress on her first day at the lab, even wearing a tie! After warming up her face (in a different clip), she sets out to see just how much pressure her powerful, fit core can produce. She is also evaluating mouthpieces, although her blowing pressure increases with each attempt. How high does she go? How many other women have ever gotten to 4psi?